Hand-wheel.



G. WIRT.

HAND WHEEL.

APPLICATION FILED MAY 29. 1906.

1,056,873, Patented Mar. 25, 1913.

UNITED STATES PATENT cmLEs wm'r, or GEBMANTQWN, PENNSYLVANIA, AssmNoa, BY MESNE ASSIGN- MENTS, 'ro THE ou'rminflnmmnn MFG. 00., or MILWAUKEE, wIsco sm, a com POBATION OF WISCONSIN.

HAND-WHEEL.

Specification of Letters Patent.

Patented Mar. 25, 1913.

Application flledMay 29, 1906. Serial No. 319,272.

To all whom it may concern:

Be it known that I, CHARLES WIRT, a citizen of the United States, residing at Germantown, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Hand-Wheel, of which the following is a. specification.

My invention relates to an improvement in hand-wheels such as are used in connection with switches, valves and steering devices. 1

My object is to provide a wheel which shall be light, strong and durable, inexpen- Sive and simple in construction, and which shall have a smooth, highly finished rim of substantially circular cross section.

My construction comprises means whereby the rim may be made of a different metal from the wheel frame supporting the same, that is, it may be made of bright metal or may be plated with a bright metal before assembling.

By my construction a 'savin of material is secured and a finishing of t e surface of the rim wheel is attained which would not be possible in casting the wheel solid, without the expensive process of turning or polishing.

Re erring to the drawings :1Fi re 1 is a plan view of my hand-wheel wit part of the wheel brokenaway. Fig. 2 is a section on line 2', 2 of Fig. 1. Fig. 3 is a view of the rear or under side of the rim member. Fig. 4 is a view of the rear or n er side o the rimp r ing fram fl inilcr numerals re er to s m r pa s roughout the severa views,

My device consists of two parts, the supporting frame or spider 1, and the hollow and ii 2 of circu ar oss ec ion. The

frame r spid r 1 comp h ub h radia ing tend the upport ng ennulus 5., Risci'ably in ne pic c in t e usual way-r The supp rting 5 has a we 15; pared tcriiistictes Sh wn Fig. 2, termi acting iii the lifnlder 6 at name with h snakes c The hard 2 i seen or herwi e formed f sh e rectal is Sllbfiiiillally circular ii-"ass section with the. 6 ai pening I, on lower side This openhis is of iiPPL csiiiictsly-tlie same width the l .ncr 9 mm s de at the. ,I g aesulus 5-. hells-2r cc e, by scre as is; she

suitable means, the metal of the hand rim 2 springing or spreading sufficiently to permit the lower side thereof to travel down the wedge shaped annulus 5 to the shoulder 6 of the spokes 4. The top of hand rim 2 may even engage with the top of annulus 5 as at 8, see Fig. 2. The hand rim 2 is preferably made of steel or other stiff metal, and when forced in this way-over the tapered supporting annulus, 5, it is held tightly and securely in said position. In fact after the two parts are thus forced together it is practically impossible to separate them, due to the peculiar formation of said hand rim. It is also to be noted that while the hand rim does not form a com plete circle, the distance between its two lower edges is comparatively so small that the lower side 9 of the annulus 5. will substantially complete the circle, presenting a smooth, round wheel for manual operation, leaving no sharp edges to be encountered by the hand. It will be obvious that a rim wheel thus formed of smooth sheet metal will have a perfectly smooth surface without flaw or crack, and without the necessity of subjecting it to lathe work, while a rim of cast metal would necessarily have to be polished or turned to make it smooth. It is further to be observed that by this construction the rim member may be ma of any metal desired, different from the frame portion, and obviously'each member may be treated independently of the other, by japanning or plating with copper'or other metal respectively, before the two are assembled.

What I claim. is

1. In a hand wheel, the combination with a p d r; aii annu us forme hereon n a sheet metal band, rim Substantially circul i n cross section and Pr i h an annular sl t for rewiring said ann l s rim fr-icticcclly'lisld on said ann iii a" hand whe l, t e combinat o with csp ider, of a tapered annulus termed ther n and a sheet m tal head rim substan lly circular in was section and pr vid d wi an annular lot far re siviiigse annulus, aid, rim being spr ad by said ann l s to tightly gr p the Iii a. head i .l the ceelhiiiation th a spider-i a ape annulus termed th cn, shoulders formed cc. the arms of said snide; contiguous to said classics, a mstalliaiid rim substantially irc a in cross section and provided with an annular slot adapted to receive said annulus; said rim being adapted to be forced over said annulus against said shoulders.

4. In a hand wheel, the combination with a spideryof an annulus formed thereon and a sheet metal rim substantially circular in cross section and provided with an annular slot for receiving said annulus, the under side of said annulus completing the surface of said rim. a

- a hand wheel, the combination with a spider; of an annulus formed thereon,

shoulders formed on the arms of said spider contiguous to said annulus and a sheet metal hand rim substantially circular in cross'section and provided with an annular slot for receiving said annulus, said rim abutting against said shoulders and being frictionally retained in place, the underside of said annulus completing the surface of said rim.

CHARLES WIRT.

Witnesses MAE Hor'MANN, HOWARD S. OKIE. 

